Manus + PostAxis

Let Manus run your posting calendar

Manus researches and works through tasks on its own. Connect PostAxis and those tasks can end in published posts: research a topic, write the posts and schedule them across your channels.

Custom MCP connector with an API key
Research, write and schedule in one task
Posts to 8 networks

Connect Manus Start for $0

Set up Manus with PostAxis

Plug PostAxis into Manus once, then talk to it like you would to whoever runs your accounts. Every click is in the full guide below.

Plug in about 3 minutes

Step 1 of 2

Add a custom MCP connector with your key

Create a PostAxis API key, then add PostAxis to Manus as a custom MCP server with the key in the Authorization header.

PostAxis account
A connected social account
Manus installed
API add-on

Custom MCP (JSON)

{
  "mcpServers": {
    "postaxis": {
      "url": "https://postaxis.io/api/mcp",
      "headers": { "Authorization": "Bearer YOUR_API_KEY" }
    }
  }
}

API keys need the PostAxis API add-on. Keep the key private and revoke it from Settings → API keys if it leaks.

Talk

Step 2 of 2

Then tell Manus what you need

Manus picks the PostAxis tools it needs. Scheduled posts go out on time whether or not the chat is still open.

Try asking

Which accounts can you post to?
What goes out this week?
Keep that one as a draft

Research this week’s news in our industry and schedule three LinkedIn posts with our take, Tuesday to Thursday at 9:00.

Done. I picked three stories, wrote a post on each and scheduled them Tuesday to Thursday at 9:00. Sources are in the task log.

via PostAxis

Example answer · lands in your PostAxis calendar

Full setup guide for Manus

Every step from a new PostAxis account to your first scheduled post. Takes about 3 minutes once your accounts are connected. Want ready-made workflows? Read the full Manus guide

1
Create your PostAxis account
Sign up at app.postaxis.io. Every plan starts with a 7-day free trial and includes MCP access with OAuth sign-in. Create an account
2
Connect your social accounts
Open Accounts in PostAxis and connect the networks you want to post to: Instagram, TikTok, YouTube, X, LinkedIn, Facebook, Threads or Telegram. Your agent can only post to accounts connected here, and it never sees your social media passwords. Open Accounts
3
Create an API key
In PostAxis open Settings → API keys and click Create API key. Copy it; it is shown only once. This needs the API add-on.
4
Open Connectors in Manus
In Manus open Settings → Connectors (Integrations), click Add connectors and choose Custom MCP.
5
Add PostAxis
Use the JSON import option and paste this block, with YOUR_API_KEY replaced by your key. Or fill in the URL and add the Authorization header by hand.
Copy this
```
{
  "mcpServers": {
    "postaxis": {
      "url": "https://postaxis.io/api/mcp",
      "headers": { "Authorization": "Bearer YOUR_API_KEY" }
    }
  }
}
```
6
Check the connection
Start a task and ask “Which PostAxis accounts are connected?”. Manus should list your social accounts.
7
Give it a posting task
Ask Manus to research, write and schedule. It runs in the cloud, so posts get scheduled even if you close the tab.

What can Manus do with PostAxis?

Everything PostAxis does in the dashboard that makes sense to do by asking: writing, scheduling, editing, publishing and checking your queue.

Sentences in, posts out

Describe the post in your own words. Manus turns it into posts and PostAxis handles the scheduling.

Every network you run

Instagram, TikTok, YouTube, X, LinkedIn, Facebook, Threads and Telegram, from a single message.

Checked before it’s saved

Caption length, media count, video length and format are checked for every network before anything is saved.

Weeks ahead in one go

Ask for a week or a month. Manus can dry-run up to 50 posts at once, show you the plan, then schedule it.

Your images and video

Attach images and videos from a link, or get a one-time upload link for files on your computer.

A key you can revoke

Manus uses an API key you create and can revoke at any time. It only reaches accounts connected in your PostAxis workspace.

What is Manus?

Manus is an autonomous AI agent that works through tasks in its own cloud environment: it browses, researches and uses connected tools while you do something else.

With PostAxis as a custom MCP connector, a Manus task can end with posts scheduled on your channels.

What can you ask Manus to post?

Brief it like a person: what it’s about, where it goes, when. Four requests that work well with Manus:

Research
Research, then post
Find three news stories in our industry from this week and schedule a LinkedIn post with our take on each, Tuesday to Thursday at 9:00.
To Manus
Long task
Fill a 30-day calendar
Plan 30 days of posts for X, LinkedIn and Threads, validate them all, show me the calendar and schedule after I approve.
To Manus
Report
Review the week
Tell me which posts published this week and which failed, and reschedule the failed ones for tomorrow.
To Manus
Launch day
Tell people what’s new
Our CSV export is live. One line for X, a short paragraph for LinkedIn, both out tomorrow morning at 9:00.
To Manus

How does Manus talk to PostAxis?

Through MCP, the Model Context Protocol: an open standard for giving AI apps tools. PostAxis runs an MCP server; Manus connects to it and gets 11 tools that work on your account, nothing more. Full MCP reference

From your message to a scheduled post

What happens between you hitting enter and the post showing up in your calendar.

You write one message: what, where, when
Manus looks up your accounts and the limits of each network you named
It drafts a version per network and sends them to PostAxis
PostAxis checks every version and saves it as scheduled, a draft or live
The post sits in your calendar, editable until it goes out

Manus + PostAxis

Server: https://postaxis.io/api/mcp
Transport: Streamable HTTP
Sign-in: API key (Bearer)

Tools Manus discovers

list_workspacesYour PostAxis workspaces
list_accountsConnected social accounts per workspace
get_platform_rulesCaption limits and media rules per network
upload_media_from_urlPull an image or video into your media library
create_upload_linkOne-time link for uploading a local file
create_postDraft, schedule or publish one post
create_posts_bulkSchedule up to 50 posts in one call
list_postsPosts by status or date range
get_postOne post with its per-network status
update_postEdit text, media or time before it goes out
delete_postRemove a draft or scheduled post

Does Manus need to stay open?

No. Manus runs tasks in the cloud and PostAxis publishes scheduled posts on time, even after you close the tab.

Can Manus schedule 30 days of posts at once?

Yes. Manus can send up to 50 posts in one bulk call. Ask it to validate first: PostAxis checks every post and saves nothing, so you can review the plan before it is scheduled.

Plan 30 days of posts for X and LinkedIn about our product, validate them, show me the calendar, then schedule.

Done. Here’s what I did:

Validated 30 posts, each going to X and LinkedIn, 0 problems
Showed the calendar and waited for approval
Scheduled all 30 for 10:00 each day

via PostAxis

Example conversation

How does Manus sign in to PostAxis?

Manus signs in to PostAxis, never to your social networks. Your Instagram, X or LinkedIn accounts stay connected to PostAxis, and you can revoke Manus’s access at any time.

API add-on✓ Used by Manus

API key

Create a key under Settings → API keys
Send it as Authorization: Bearer KEY, or in the URL for clients that only take a URL
Revoke the key any time and access stops at once

Best for servers and automations with no browser: n8n, Grok, Manus, headless agents

Every plan

OAuth sign-in

Manus opens the PostAxis sign-in in your browser
You log in and click Approve
It gets access to your account only, until you revoke it

Best for apps you use yourself: ChatGPT, Claude, Cursor, Codex and most others

If something doesn’t work

The most common problems when connecting Manus, and how to fix them.

The agent says no accounts are connected

Connect at least one social account under Accounts in PostAxis. If you use several workspaces, tell the agent which one, for example “use my Acme workspace”.

401 Unauthorized or “sign in again”

The sign-in expired or was revoked. Reconnect from your agent (it opens the PostAxis sign-in again). With an API key, check the key is still active under Settings → API keys.

A post was rejected before saving

PostAxis checks each network’s rules first: caption length, media count, video length and format. The error says what to change; ask the agent to fix it and try again.

Posts are scheduled at the wrong time

Say the timezone in your request, for example “9:00 Europe/Berlin”. Without one, the agent uses the timezone it was told or UTC.

I want to stop an agent from posting

Open Settings → API keys in PostAxis. Revoke the agent under Connected agents, or revoke its API key. It loses access immediately.

Manus and PostAxis: questions

Why does Manus use an API key?

Manus runs tasks in the cloud, often while you are away, so a long-lived API key is the most reliable way for it to reach PostAxis.

What is the PostAxis MCP server?

It’s a remote Model Context Protocol server at https://postaxis.io/api/mcp that gives AI agents 11 tools to list your accounts, upload media and create, schedule, edit and delete posts in PostAxis.

Which social networks are supported?

Instagram (posts, Reels, carousels), TikTok (videos and photo posts), YouTube Shorts, X, LinkedIn, Facebook Pages, Threads and Telegram channels.

How much does it cost?

MCP access with OAuth is included in every PostAxis plan, and every plan starts with a 7-day free trial. API keys need the API add-on.

What stops an agent from posting something wrong?

PostAxis checks every post against each network’s rules before saving, the agent can preview bulk plans without saving them, everything shows up in your calendar, and you can revoke an agent at any time in Settings → API keys.